- NOVEL BIS AU(I) SENSITIZERS AND THEIR SYNTHESIS
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This invention relates to an organothiosulfonato Au(I) complex having the formula[A—SO2S—Au—S SO2—A]n?M+nwherein M is a cationic counter ion;A is a substituted or unsubstituted organic group;and n is 1 to 4; and wherein the compound is symmetrical. It fur
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Page/Page column 6
(2008/06/13)
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- New Routes Towards Halogeno Complexes of Gold by Halide Exchange from . Crystal and Molecular Structure of Triphenylmethylium Tetrachloroaurate(III),
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Anhydrous and AuI can be obtained by halide exchange from with RX (X = Br or I, R = H or alkyl).The addition of to CPh3Cl produces the ionic derivative whose crystal and molecular structure has been determined by X-ray diffraction.Crystal data: space group P21/c, a = 8.225(3), b = 14.671(6), c = 16.738(8) Angstroem, β = 97.85(2) deg and Z = 4.Other organic chlorides RCl (R = Pr, SiMe3 or But) react with with a partial reduction to the mixed-valence chloride .Addition of to anhydrous iron(III) chloride produced a mass-spectrometrically active mixed iron-gold species.
- Dell'Amico, Daniela Belli,Calderazzo, Fausto,Morvillo, Antonio,Pelizzi, Giancarlo,Robino, Pierluigi
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p. 3009 - 3016
(2007/10/02)
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- New entries to halo- and halo-carbonyl complexes of gold
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Gold(I) halides have been obtained from Au2Cl6: a) with cyclohexene as halogen acceptor (AuCl); b) by halide exchange with i-Pr-Br, followed by treatment with cyclohexene at low temperature (AuBr); c) by halide exchange with i-Pr-I at room temperature (AuI).Carbonylation of AuBr in dichloromethane or treatment of Au2Br6 with CO and cyclohexene in 1,2-dibromoethane yielded AuBr(CO), characterized by IR and 13C NMR spectra in solution, the latter at low temperature
- Dell'Amico, Daniela Belli,Calderazzo, Fausto,Robino, Pierluigi,Segre, Annalaura
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- Halogenocarbonyl Complexes of Gold
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Carbonyl gold(I) bromide was obtained in solutions of halogenated hydrocarbons by (a) absorption of CO by in the presence of cyclohexene as a halogen abstractor, (b) carbonylation of ; (c) carbonylation of AuBr.The compound has been studied by spectroscopic methods in solution, including NMR measurements at variable temperature.Both and undergo a rapid exchange process with dissolved CO.The low stability of with respect to its decomposition to AuBr(s) prevents the isolation of the carbonyl bromide of gold(I).The present findings confirm the trend to lower stability in the sequence Cl > Br > I already established for the carbonylhalogeno derivatives of palladium(II) and platinum(II).
- Dell'Amico, Daniela Belli,Calderazzo, Fausto,Robino, Pierluigi,Segre, Annalaura
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p. 3017 - 3020
(2007/10/02)
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